| Publication | Date of Publication | Type |
|---|
| Linear maps preserving parallel matrix pairs with respect to the Ky-Fan \(k\)-norm | 2024-02-28 | Paper |
| Constructing a straight line intersecting four lines | 2024-01-15 | Paper |
| Numerical ranges of cyclic shift matrices | 2023-10-31 | Paper |
| Quantum error correction scheme for fully-correlated noise | 2023-09-18 | Paper |
| Extremality of bounds for numerical radii of Foguel operators | 2023-08-10 | Paper |
| Linear maps preserving matrices annihilated by a fixed polynomial | 2023-07-13 | Paper |
| Unitarily invariant norms on operators | 2023-04-04 | Paper |
| Construction of quantum states with special properties by projection methods | 2023-02-16 | Paper |
| Error correction schemes for fully correlated quantum channels protecting both quantum and classical information | 2023-01-13 | Paper |
| Cliques and independent sets of the Birkhoff polytope graph | 2022-12-23 | Paper |
| Joint k-numerical ranges of operators | 2022-11-09 | Paper |
| The joint numerical range of commuting matrices | 2022-10-10 | Paper |
| Minimum number of non-zero-entries in a stable matrix exhibiting Turing instability | 2022-09-27 | Paper |
| On the mixed-unitary rank of quantum channels | 2022-08-18 | Paper |
| Closedness of the k-numerical range | 2022-07-19 | Paper |
| Generalized circular projections | 2022-07-19 | Paper |
| Unitarily invariant Norms on Operators | 2021-12-17 | Paper |
| Commuting normal operators and joint numerical range | 2021-08-11 | Paper |
| The joint $k$-numerical range of operators | 2021-05-10 | Paper |
| Coherence measures induced by norm functions | 2021-05-04 | Paper |
| Higher rank matricial ranges and hybrid quantum error correction | 2021-04-14 | Paper |
| The diameter and width of higher rank numerical ranges | 2021-04-14 | Paper |
| Numerical range, dilation, and maximal operator systems | 2021-03-20 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5139649 | 2020-12-09 | Paper |
| Joint numerical ranges and commutativity of matrices | 2020-09-08 | Paper |
| Joint matricial range and joint congruence matricial range of operators | 2020-07-27 | Paper |
| Complexifications of real Banach spaces and their isometries | 2020-04-21 | Paper |
| Nonsurjective zero product preservers between matrix spaces over an arbitrary field | 2020-03-10 | Paper |
| Eigenvalue continuity and Ger\v{s}gorin's theorem | 2020-02-12 | Paper |
| Preservation of the joint essential matricial range | 2019-12-11 | Paper |
| Numerical Range Inclusion, Dilation, and Operator Systems | 2019-11-04 | Paper |
| Numerical range, dilation, and completely positive maps | 2019-10-07 | Paper |
| Minimum number of non-zero-entries in a \(7 \times 7\) stable matrix | 2019-05-29 | Paper |
| Submultiplicativity of the numerical radius of commuting matrices of order two | 2019-05-10 | Paper |
| The generalized numerical range of a set of matrices | 2019-01-24 | Paper |
| Evolution of unconditional dispersal in periodic environments | 2018-12-05 | Paper |
| Products of positive semi-definite matrices | 2018-10-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4685885 | 2018-10-09 | Paper |
| Convexity and star-shapedness of matricial range | 2018-09-06 | Paper |
| Preservers of isometries | 2018-07-23 | Paper |
| Inequalities on generalized matrix functions | 2018-02-19 | Paper |
| Convexity and Star-shapedness of Matricial Range | 2017-10-26 | Paper |
| Unitary similarity invariant function preservers of skew products of operators | 2017-06-23 | Paper |
| Numerical ranges of the product of operators | 2017-05-26 | Paper |
| Minkowski product of convex sets and product numerical range | 2017-01-12 | Paper |
| Factoring a Quadratic Operator as a Product of Two Positive Contractions | 2016-06-03 | Paper |
| Product of two positive contractions | 2016-04-21 | Paper |
| Perturbing eigenvalues of nonnegative matrices | 2016-04-18 | Paper |
| Preservers of unitary similarity functions on Lie products of matrices | 2016-04-18 | Paper |
| Product of operators and numerical range | 2016-02-29 | Paper |
| Numerical range of Lie product of operators | 2016-01-07 | Paper |
| Maximal noiseless code rates for collective rotation channels on qudits | 2015-12-09 | Paper |
| Factorization of Permutations | 2015-10-23 | Paper |
| Numerical Ranges of the product of Operators | 2015-10-06 | Paper |
| Projection methods for quantum channel construction | 2015-09-23 | Paper |
| Positivity of partitioned Hermitian matrices with unitarily invariant norms | 2015-09-22 | Paper |
| Ranks and eigenvalues of states with prescribed reduced states | 2015-08-14 | Paper |
| The automorphism group of separable states in quantum information theory | 2015-07-17 | Paper |
| Stationary probability vectors of higher-order Markov chains | 2015-05-06 | Paper |
| Determinantal and eigenvalue inequalities for matrices with numerical ranges in a sector | 2015-03-10 | Paper |
| A new criterion and a special class of \(k\)-positive maps | 2015-02-27 | Paper |
| Linear maps preserving numerical radius of tensor products of matrices | 2015-02-26 | Paper |
| A REVIEW ON OPERATOR QUANTUM ERROR CORRECTION — DEDICATED TO PROFESSOR MIKIO NAKAHARA ON THE OCCASION OF HIS 60TH BIRTHDAY | 2014-11-07 | Paper |
| RECURSIVE CONSTRUCTION OF NOISELESS SUBSYSTEM FOR QUDITS | 2014-11-07 | Paper |
| Spectral radius, numerical radius, and the product of operators | 2014-10-31 | Paper |
| Maximizing the numerical radii of matrices by permuting their entries | 2014-08-07 | Paper |
| Linear maps preserving the higher numerical ranges of tensor products of matrices | 2014-08-07 | Paper |
| Projection methods in quantum information science | 2014-07-24 | Paper |
| Pseudospectra of special operators and pseudospectrum preservers | 2014-07-17 | Paper |
| Graphs associated with matrices over finite fields and their endomorphisms | 2014-06-04 | Paper |
| Decomposition of quantum gates | 2014-05-28 | Paper |
| Linear preservers of tensor product of unitary orbits, and product numerical range | 2014-01-21 | Paper |
| Linear preservers and quantum information science | 2014-01-15 | Paper |
| Physical transformations between quantum states | 2014-01-14 | Paper |
| Linear Maps Preserving Ky Fan Norms and Schatten Norms of Tensor Products of Matrices | 2013-09-26 | Paper |
| DECOMPOSITION OF UNITARY MATRICES AND QUANTUM GATES | 2013-06-27 | Paper |
| Elementary proofs for some results on the circular symmetry of the numerical range | 2013-06-24 | Paper |
| A geometric characterization of invertible quantum measurement maps | 2013-01-17 | Paper |
| Perfect partition of some regular bipartite graphs | 2012-12-25 | Paper |
| Efficient quantum error correction for fully correlated noise | 2012-12-04 | Paper |
| Generalized interlacing inequalities | 2012-11-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3165162 | 2012-10-25 | Paper |
| Elliptical range theorems for generalized numerical ranges of quadratic operators | 2012-10-21 | Paper |
| Preservers of matrix pairs with a fixed inner product value | 2012-09-21 | Paper |
| Maps preserving the joint numerical radius distance of operators | 2012-08-03 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2885140 | 2012-05-21 | Paper |
| Every invertible matrix is diagonally equivalent to a matrix with distinct eigenvalues | 2012-05-14 | Paper |
| Permutations as Product of Parallel Transpositions | 2012-03-15 | Paper |
| Quantum error correction and generalized numerical ranges | 2012-02-22 | Paper |
| Spectra, norms and numerical ranges of generalized quadratic operators | 2011-12-14 | Paper |
| Interpolation by completely positive maps | 2011-12-14 | Paper |
| Properties and preservers of the pseudospectrum | 2011-12-08 | Paper |
| A note on the realignment criterion | 2011-09-12 | Paper |
| Elliptical range theorems for generalized numerical ranges of quadratic operators | 2011-08-02 | Paper |
| Least-squares approximation by elements from matrix orbits achieved by gradient flows on compact lie groups | 2011-07-08 | Paper |
| Higher Rank Numerical Ranges of Normal Matrices | 2011-06-15 | Paper |
| Euclidean and circum-Euclidean distance matrices: Characterizations and linear preservers | 2011-02-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3075197 | 2011-02-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3070684 | 2011-01-26 | Paper |
| Preservers of eigenvalue inclusion sets of matrix products | 2010-12-01 | Paper |
| A note on the unitary part of a contraction | 2010-10-22 | Paper |
| Preservers of eigenvalue inclusion sets | 2010-07-20 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3574042 | 2010-07-09 | Paper |
| Studying genetic code by a matrix approach | 2010-06-23 | Paper |
| Operator radii and unitary operators | 2010-06-07 | Paper |
| Multiplicative maps preserving the higher rank numerical ranges and radii | 2010-04-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5306895 | 2010-04-12 | Paper |
| Numerical ranges of the powers of an operator | 2010-03-01 | Paper |
| Sum of Hermitian Matrices with Given Eigenvalues: Inertia, Rank, and Multiple Eigenvalues | 2010-02-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3653831 | 2009-12-29 | Paper |
| The sum of unitary similarity orbits containing only special operators | 2009-11-23 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3643403 | 2009-11-11 | Paper |
| Graphs equienergetic with edge-deleted subgraphs | 2009-09-29 | Paper |
| Linear preservers of higher rank numerical ranges and radii | 2009-07-23 | Paper |
| The joint essential numerical range of operators: convexity and related results | 2009-07-13 | Paper |
| Maps preserving product \(XY -YX^*\) on factor von Neumann algebras | 2009-07-02 | Paper |
| Condition for the higher rank numerical range to be non-empty | 2009-06-17 | Paper |
| Eigenvalues of the Sum of Matrices from Unitary Similarity Orbits | 2009-04-30 | Paper |
| Preservers of spectral radius, numerical radius, or spectral norm of the sum on nonnegative matrices | 2009-03-17 | Paper |
| Davis-Wielandt shells of operators | 2009-03-02 | Paper |
| SPECTRUM, NUMERICAL RANGE AND DAVIS-WIELANDT SHELL OF A NORMAL OPERATOR | 2009-01-08 | Paper |
| Spectral radius preservers of products of monnegative matrices | 2008-12-09 | Paper |
| Higher rank numerical ranges and low rank perturbations of quantum channels | 2008-10-22 | Paper |
| Canonical forms, higher rank numerical ranges, totally isotropic subspaces, and matrix equations | 2008-09-01 | Paper |
| Maps preserving spectral radius, numerical radius, spectral norm | 2008-05-28 | Paper |
| SCHUR MULTIPLICATIVE MAPS ON MATRICES | 2008-05-08 | Paper |
| Ranks and determinants of the sum of matrices from unitary orbits | 2008-02-21 | Paper |
| Eigenvalues of an alignment matrix in nonlinear manifold learning | 2008-02-15 | Paper |
| Polynomial numerical hulls of matrices | 2007-12-14 | Paper |
| Operators with numerical range in a given closed half plane | 2007-10-24 | Paper |
| Mappings that preserve pairs of operators with zero triple Jordan product | 2007-09-14 | Paper |
| Numerical Range of the Derivation of an Induced Operator | 2007-09-03 | Paper |
| 𝐶*-isomorphisms, Jordan isomorphisms, and numerical range preserving maps | 2007-06-19 | Paper |
| Schur product of matrices and numerical radius (range) preserving maps | 2007-06-06 | Paper |
| Maps preserving the nilpotency of products of operators | 2007-06-06 | Paper |
| Distances from a Hermitian Pair to Diagonalizable and Nondiagonalizable Hermitian Pairs | 2007-05-03 | Paper |
| Extension of the total least square problem using general unitarily invariant norms | 2007-02-14 | Paper |
| Convergence properties of preconditioned Hermitian and skew-Hermitian splitting methods for non-Hermitian positive semidefinite matrices | 2007-02-02 | Paper |
| Mappings preserving spectra of products of matrices | 2007-02-01 | Paper |
| \(G\)-invariant norms and bicircular projections | 2007-01-09 | Paper |
| Mappings on matrices: invariance of functional values of matrix products | 2007-01-02 | Paper |
| On dispersal and population growth for multistate matrix models | 2006-12-07 | Paper |
| Product of operators and numerical range preserving maps | 2006-06-30 | Paper |
| Unitarily Invariant Metrics on the Grassmann Space | 2006-05-31 | Paper |
| A Lower Bound on the C-Numerical Radius of Nilpotent Matrices Appearing in Coherent Spectroscopy | 2006-05-31 | Paper |
| On the Evolution of Dispersal in Patchy Landscapes | 2006-05-30 | Paper |
| Optimal Parameter in Hermitian and Skew-Hermitian Splitting Method for Certain Two-by-Two Block Matrices | 2006-05-30 | Paper |
| A short proof of interlacing inequalities on normalized Laplacians | 2006-04-28 | Paper |
| The ultimate estimate of the upper norm bound for the summation of operators | 2006-04-06 | Paper |
| Automorphisms of certain groups and semigroups of matrices | 2005-12-27 | Paper |
| Inverse closed ray-nonsingular cones of matrices | 2005-06-01 | Paper |
| Linear maps transforming the higher numerical ranges | 2005-06-01 | Paper |
| Operator properties of \(T\) and \(K(T)\) | 2005-06-01 | Paper |
| Multiplicative preservers and induced operators | 2005-06-01 | Paper |
| Isometries for unitarily invariant norms | 2005-04-21 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4665541 | 2005-04-11 | Paper |
| Isometries between matrix algebras | 2005-03-21 | Paper |
| Generalized doubly stochastic matrices and linear preservers | 2005-03-14 | Paper |
| Non-existence of 5X5 full ray nonsingular matrices | 2005-03-11 | Paper |
| Eigenvalues, singular values, and Littlewood-Richardson coefficients | 2005-03-07 | Paper |
| A note on eigenvalues of perturbed Hermitian matrices | 2005-02-23 | Paper |
| H-Unitary and Lorentz Matrices: A Review | 2005-02-21 | Paper |
| Uniqueness of the solutions of some completion problems | 2004-11-26 | Paper |
| Isometries for Ky Fan norms between matrix spaces | 2004-10-28 | Paper |
| Inclusion Regions for Numerical Ranges and Linear Preservers | 2004-09-28 | Paper |
| Multiplicative Preservers of C-Numerical Ranges and Radii | 2004-09-28 | Paper |
| Finite reflection groups and linear preserver problems | 2004-09-27 | Paper |
| Off-diagonal submatrices of a Hermitian matrix | 2004-08-13 | Paper |
| Geometric means | 2004-08-06 | Paper |
| Linear Operators on Matrix Algebras that Preserve the Numerical Range, Numerical Radius or the States | 2004-05-27 | Paper |
| Principal Submatrices of a Hermitian Matrix | 2004-03-17 | Paper |
| Linear maps leaving invariant subsets of nonnegative symmetric matrices | 2004-03-17 | Paper |
| Norm bounds for summation of two normal matrices. | 2004-03-14 | Paper |
| Central groupoids, central digraphs, and zero-one matrices \(A\) satisfying \(A^{2}=J\). | 2004-03-14 | Paper |
| Isometries for Ky-Fan norms on block triangular matrix algebras | 2004-03-07 | Paper |
| Multiplicative maps on invertible matrices that preserve matricial properties | 2004-02-15 | Paper |
| Induced norms, states, and numerical ranges | 2004-02-12 | Paper |
| Linear maps transforming \(H\)-unitary matrices. | 2004-01-14 | Paper |
| Linear Preservers of Finite Reflection Groups | 2003-12-08 | Paper |
| Linear operators preserving decomposable numerical radii on orthonormal tensors | 2003-11-10 | Paper |
| Numerical Radius Isometries | 2003-10-21 | Paper |
| Additive Decomposition of Real Matrices | 2003-10-21 | Paper |
| Linear Maps on Selfadjoint Operators Preserving Invertibility, Positive Definiteness, Numerical Range | 2003-10-13 | Paper |
| On numerical ranges and roots. | 2003-07-30 | Paper |
| A note on the product* | 2003-06-30 | Paper |
| Some Convexity Features Associated with Unitary Orbits | 2003-05-26 | Paper |
| Diagonals and Partial Diagonals of Sum of Matrices | 2003-02-23 | Paper |
| Multiplicative preservers on semigroups of matrices | 2003-02-05 | Paper |
| Linear transformations between matrix spaces that map one rank specific set into another | 2003-02-05 | Paper |
| Inequalities on Singular Values of Block Triangular Matrices | 2003-01-05 | Paper |
| Linear Maps Transforming the Unitary Group | 2003-01-01 | Paper |
| Norm bounds on the sum of block diagonal matrices | 2003-01-01 | Paper |
| H-joint numerical ranges | 2002-11-28 | Paper |
| Linear maps preserving permutation and stochastic matrices | 2002-11-17 | Paper |
| Interlacing inequalities for totally nonnegative matrices | 2002-11-17 | Paper |
| On Groups That Are Isomorphic to a Proper Subgroup | 2002-11-10 | Paper |
| Linear maps leaving the alternating group invariant | 2002-10-22 | Paper |
| Linear operators preserving correlation matrices | 2002-10-07 | Paper |
| Orthogonality of matrices | 2002-08-28 | Paper |
| The numerical range of a nonnegative matrix | 2002-08-28 | Paper |
| Linear Preserver Problems | 2002-08-18 | Paper |
| Linear Operators Preserving Generalized Numerical Ranges and Radii on Certain Triangular Algebras of Matrices | 2002-08-01 | Paper |
| Applications of Perron-Frobenius theory to population dynamics | 2002-07-29 | Paper |
| Construction of matrices with prescribed singular values and eigenvalues | 2002-06-26 | Paper |
| Shells of matrices in indefinite inner product spaces | 2002-06-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4533180 | 2002-06-09 | Paper |
| Dedication to Tsayoshi Ando | 2002-06-06 | Paper |
| A survey on linear preservers of numerical ranges and radii | 2002-05-29 | Paper |
| Linear operators preserving the numerical range (radius) on triangular matrices | 2002-04-02 | Paper |
| Optimizing quadratic forms of adjacency matrices of trees and related eigenvalue problems | 2002-03-21 | Paper |
| Inequalities and equalities for the Cartesian decomposition of complex matrices | 2002-03-06 | Paper |
| Numerical Ranges Arising from Simple Lie Algebras | 2002-01-31 | Paper |
| Spectral inequalities and equalities involving products of matrices | 2001-12-12 | Paper |
| Induced operators on symmetry classes of tensors | 2001-12-10 | Paper |
| A simple proof of the Craig-Sakamoto theorem | 2001-12-09 | Paper |
| Norms, Isometries, and Isometry Groups | 2001-11-26 | Paper |
| Nonconvexity of the Generalized Numerical Range Associated with the Principal Character | 2001-10-28 | Paper |
| Some general techniques on linear preserver problems | 2001-07-19 | Paper |
| Minimal distortion problems for classes of unitary matrices | 2001-05-21 | Paper |
| Linear operators preserving directional majorization | 2001-05-06 | Paper |
| Inequalities on the singular values of an off-diagonal block of a Hermitian matrix | 2001-04-09 | Paper |
| Some matrix techniques in game theory | 2001-04-08 | Paper |
| A class of unitarily invariant norms on 𝐵(𝐻) | 2001-02-19 | Paper |
| Numerical ranges and dilations∗ | 2001-01-03 | Paper |
| Isometric isomorphisms between normed spaces | 2000-11-19 | Paper |
| On the Hu-Hurley-Tam conjecture concerning the generalized numerical range | 2000-11-12 | Paper |
| Decomposable numerical ranges on orthonormal tensors | 2000-11-06 | Paper |
| Generalized numerical ranges of permanental compounds arising from quantum systems of bosons | 2000-09-14 | Paper |
| Extension of stochastic dominance theory to random variables | 2000-08-24 | Paper |
| Determinants of certain classes of zero-one matrices with equal line sums | 2000-08-24 | Paper |
| Extremal Characterizations of the Schur Complement and Resulting Inequalities | 2000-07-20 | Paper |
| Convexity of the Joint Numerical Range | 2000-03-20 | Paper |
| The Lidskii-Mirsky-Wielandt theorem -- additive and multiplicative versions | 1999-10-08 | Paper |
| Some interlacing theorems on the schur complement | 1999-07-07 | Paper |
| A note on convex stochastic dominance | 1999-04-28 | Paper |
| Estimating the Extreme Singular Values of Matrices | 1999-04-09 | Paper |
| Equality of higher numerical ranges of matrices and a conjecture of Kippenhahn on Hermitian pencils | 1999-02-23 | Paper |
| Isometries of direct sums of sequence spaces | 1999-01-17 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3841755 | 1998-12-02 | Paper |
| q-numerical ranges of normal and convex matrices | 1998-11-15 | Paper |
| Some Results on the q-Numerical | 1998-11-15 | Paper |
| Perfect codes on the towers of Hanoi graph | 1998-09-28 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4360036 | 1998-09-22 | Paper |
| Generalized eigenvalues of a definite Hermitian matrix pair | 1998-07-08 | Paper |
| Invertible preservers and algebraic groups III: preservers of unitary similarity (congruence) invariants and overgroups of some unitary subgroups∗ | 1998-06-24 | Paper |
| Shapes and computer generation of numerical ranges of Krein space operators | 1998-05-13 | Paper |
| Generalizations of Ky Fan's Dominance Theorem | 1998-05-11 | Paper |
| Remarks on numerical ranges of operators in spaces with an indefinite metric | 1998-03-24 | Paper |
| Isometries for the induced \(c\)-norm on square matrices and some related results | 1998-03-24 | Paper |
| Norms and Inequalities Related to Schur Products of Rectangular Matrices | 1998-03-19 | Paper |
| Extreme vectors of doubly nonnegative matrices | 1997-11-23 | Paper |
| Special classes of positive and completely positive maps | 1997-11-03 | Paper |
| Matrix inequalities and partial isometries that arise in x-ray crystallography | 1997-10-21 | Paper |
| Determinant of the Sum of a Symmetric and a Skew-Symmetric Matrix | 1997-09-29 | Paper |
| Some convexity theorems for the generalized numerical ranges | 1997-08-31 | Paper |
| Classroom Note: A Unified Elementary Approach to Canonical Forms of Matrices | 1997-06-12 | Paper |
| Norm hull of vectors and matrices | 1997-05-19 | Paper |
| A research problem: | 1997-05-14 | Paper |
| Closed Symmetric Overgroups of Sn in On | 1997-04-13 | Paper |
| Matrix inequalities involving a positive linear map | 1997-03-11 | Paper |
| A simple proof of the elliptical range theorem | 1996-08-11 | Paper |
| Numerical ranges of an operator on an indefinite inner product space | 1996-07-19 | Paper |
| Distances between the graphs of matrices | 1996-06-30 | Paper |
| The determinant of the sum of two matrices | 1996-06-04 | Paper |
| Minimum positive determinant of integer matrices with constant row and column sums | 1996-05-21 | Paper |
| A Dilation and Norm in Several Variable Operator Theory | 1996-01-08 | Paper |
| Isometries for the vector (p,q) norm and the induced (p,q) norm | 1995-12-11 | Paper |
| Isometries of l p -norm | 1995-11-27 | Paper |
| Linear maps relating different unitary similarity orbits or different generalized numerical ranges | 1995-09-06 | Paper |
| Permutation invariant norms | 1995-05-23 | Paper |
| A generalized numerical range: the range of a constrained sesquilinear form | 1995-02-09 | Paper |
| C-numerical ranges andC-numerical radii | 1995-02-09 | Paper |
| Some geometrical properties of the decomposable numerical range | 1995-02-09 | Paper |
| Some aspects of the theory of norms | 1995-02-09 | Paper |
| A Note on Extreme Correlation Matrices | 1995-01-17 | Paper |
| Antidiagonals of matrices in a unitary similarity orbit | 1994-12-01 | Paper |
| Numerical Range of Matrix Polynomials | 1994-11-16 | Paper |
| Linear Operators Preserving Similarity Classes and Related Results | 1994-11-03 | Paper |
| Linear Operators Preserving Complex Orthogonal Equivalence on Matrices | 1994-10-05 | Paper |
| Linear operators preserving the \((p,q)\) numerical radius | 1994-08-15 | Paper |
| Linear operators preserving certain singular matrix sets | 1994-07-10 | Paper |
| Overgroups of some classical linear groups with applications to linear preserver problems | 1994-05-16 | Paper |
| Linear operators leaving a class of matrices with fixed singular values invariant | 1994-05-10 | Paper |
| Linear operators preserving the inner and outerc-spectral radii | 1994-04-05 | Paper |
| Linear operators preserving unitaryt-congruence (orthogonal similarity) on complex (real) matrices | 1994-01-09 | Paper |
| Some Results on the Numerical Range of a Derivation | 1993-12-20 | Paper |
| Chapter 5: linear preservers on functions of Singular values | 1993-05-16 | Paper |
| Chapter 6: linear preservers on numerical ranges, numerical radii and unitary similarity invariant norms | 1993-05-16 | Paper |
| Chapter 7: linear preservers of relations on Matrix Spaces | 1993-05-16 | Paper |
| Chapter 9: miscellaneous preserver problems | 1993-05-16 | Paper |
| Product of diagonal elements of matrices | 1993-05-16 | Paper |
| Linear operators preserving \(t\)-congruence on matrices | 1993-01-16 | Paper |
| A brief survey on the decomposable numerical range of matrices | 1993-01-12 | Paper |
| Linear maps preserving regional eigenvalue location | 1993-01-12 | Paper |
| Linear operators preserving unitaryt-congruence (orthogonal similarity) on complex (real) matrices | 1993-01-01 | Paper |
| Norms induced by symmetric guage functions | 1992-09-27 | Paper |
| Linear operators preserving certain equivalence relations originating in system theory | 1992-06-28 | Paper |
| Linear preserver problems: A brief introduction and some special techniques | 1992-06-28 | Paper |
| Certain isometries on \(\mathbb{R}{}^ n\) | 1992-06-28 | Paper |
| A special linear operator on | 1992-06-26 | Paper |
| Isometries of symmetric gauge functions | 1992-06-26 | Paper |
| The numerical range and decomposable numerical range of matrices | 1992-06-25 | Paper |
| Inequalities relating norms invariant under unitary similarities | 1992-06-25 | Paper |
| Joint ranges of Hermitian matrices and simultaneous diagonalization | 1991-01-01 | Paper |
| On thekth matrix numerical range | 1991-01-01 | Paper |
| Some Inequalities on the Decomposable Numerical Radii of Matrices | 1991-01-01 | Paper |
| Matrices with Circular Symmetry on their Unitary Orbits and C-Numerical Ranges | 1991-01-01 | Paper |
| Linear Operators Preserving Certain Equivalence Relations on Matrices | 1991-01-01 | Paper |
| Some results on the generalized k-numerical range | 1991-01-01 | Paper |
| G-invariant norms and G(c)-radii | 1991-01-01 | Paper |
| Duality between some linear preserver problems. III: c-spectral norms and (skew)-symmetric matrices with fixed singular values | 1991-01-01 | Paper |
| Linear operators preserving unitarily invariant norms of matrices | 1990-01-01 | Paper |
| Matrices for which 0 ∉F(Am) | 1990-01-01 | Paper |
| Linear operators preserving certain functions on singular values of matrices | 1990-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3481881 | 1990-01-01 | Paper |
| Linear operators preserving unitary similarity invariant norms | 1990-01-01 | Paper |
| On certain convex matrix sets | 1990-01-01 | Paper |
| Some extremal problems for positive definite matrices and operators | 1990-01-01 | Paper |
| c-convex matrices: characterizations, inclusion relations and normality | 1989-01-01 | Paper |
| Distance to the convex hull of the unitary orbit with respect to unitary similarity invariant norms | 1989-01-01 | Paper |
| G-Invariant Hermitian Forms and G-Invariant Elliptical Norms | 1989-01-01 | Paper |
| Norms that are invariant under unitary similarities and theC-numerical radii | 1989-01-01 | Paper |
| The numerical range of derivations | 1989-01-01 | Paper |
| Polynomials and Numerical Ranges | 1988-01-01 | Paper |
| Some isometries of rectangular complex matrices | 1988-01-01 | Paper |
| Linear operators that preserve thec-numerical range or radius of matrices | 1988-01-01 | Paper |
| Additive decomposition of nonnegative matrices with applications to permanents and scalingt | 1988-01-01 | Paper |
| Inequalities relating unitarily invariant norms and the numerical radius | 1988-01-01 | Paper |
| Linear transformations on that preserve the Ky Fank-norm and a remarkable special case when (nk) = (4, 2) | 1988-01-01 | Paper |
| Duality between some linear preservers problems: the invariance of thec-numerical range, thec-numerical radius and certain matrix sets | 1988-01-01 | Paper |
| Linear operators preserving the decomposable numerical radius | 1988-01-01 | Paper |
| Linear operators preserving the (p,q)-numerical range | 1988-01-01 | Paper |
| Duality between some linear preserver problems. II: Isometries with respect to c-spectral norms and matrices with fixed singular values | 1988-01-01 | Paper |
| Matrices with some extremal properties | 1988-01-01 | Paper |
| The c-spectralc-radial and c-convex matrices | 1987-01-01 | Paper |
| On the unitarily invariant norms and some related results | 1987-01-01 | Paper |
| An inequality on elementary symmetric functions | 1987-01-01 | Paper |
| Linear operators preserving the higher numerical radius of matrices | 1987-01-01 | Paper |
| TheC-convex matrices | 1987-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3807370 | 1987-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3743437 | 1986-01-01 | Paper |
| The decomposable numerical radius and numerical radius of a compound matrix | 1986-01-01 | Paper |
| On the higher numerical radius and spectral norm | 1986-01-01 | Paper |
| On the extremal solutions for capacitated network problems | 1985-01-01 | Paper |
| A note on Miranda's results about the characteristic values and the three types of singular values of a complex matrix | 1984-01-01 | Paper |
